Patents by Inventor Zheng R. Xu

Zheng R. Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for controlling actuation of a well component
    Patent number: 7921924
    Abstract: A technique is provided for controlling actuation of a well component. A resistance device is deployed in a tool string and connected to a well tool to be actuated. The resistance device comprises a deformable body and a deforming member that move relative to one another during actuation of the well tool. Deformation of the deforming member provides constant resistance and consequent control over component actuation.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 12, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Zheng R. Xu, William D. Eatwell
  • Packer cup systems for use inside a wellbore
    Patent number: 7703512
    Abstract: The present invention provides a packer cup system for use inside a wellbore comprising a packer cup and a backup component coupled thereto. In one configuration, the backup component further comprises a support member and a rubber ring disposed between the support member and the packer cup. The support member is configured to prevent the rubber ring from moving toward the support member.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: April 27, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Zheng R. Xu, Avel Ortiz, Frank Espinosa
  • SYSTEM AND METHOD FOR CONTROLLING ACTUATION OF A WELL COMPONENT
    Publication number: 20080142223
    Abstract: A technique is provided for controlling actuation of a well component. A resistance device is deployed in a tool string and connected to a well tool to be actuated. The resistance device comprises a deformable body and a deforming member that move relative to one another during actuation of the well tool. Deformation of the deforming member provides constant resistance and consequent control over component actuation.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Zheng R. Xu, William D. Eatwell
  • Apparatus comprising bistable structures and methods for their use in oil and gas wells
    Patent number: 6431271
    Abstract: Apparatus for use in a wellbore comprises (1) a first structure that comprises (a) at least one extendable member that can be reconfigured from a coiled form to an extended form, the member having a flattened transverse cross-section when in the coiled form and a curved transverse cross-section when in the extended form, (b) a downhole well tool attached to the extendable member, and (c) a housing in which the extendable member can be coiled; (2) a well mounting device for supporting the first structure from the wellbore or the surface of a well; and (3) means for reconfiguring the extendable, coilable member in a wellbore from the coiled form to the extended form. Preferably, the extendable member is reversibly configurable between the coiled form and the extended form.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: August 13, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Hubertus V. Thomeer, Zheng R. Xu, Jeffrey R. Beckel